Lifting jack



NOV. 24, 1936. s w N 2,062,132

LIFTING JACK Filed June' 20, 1936 ENTOR.

ATTORNEY.

Patented Nov 24,, 1936 A UNITED STATES PATENT OFFICE 2,062,132 LIFTING JACK Sidney W. Jordan, Cleveland, Ohio Application June 20, 1936, Serial No. 86,227. 5 Claims.- 254-100) 4 This invention relates to lifting jacks of the channel or bore 32. -Whenin the proper position, screw type and has for its object to provide imthe block I9 is tipped back to the position shown proved means whereby the jack-block can be in Fig. 2 the turning rod I8 is inserted in the readily and quickly adjusted to any desired height bore I1 and the block. I9 is screwed upon the 5 upon the jack-screw by disengaging the threads, jack-screw I3 as the said jack-screw is turned and then the threads can be quickly engaged and in the socket I6 in the base Ill. The weight of held in engagement by the weight of the object the object being raised pressing down on the lug being lifted. Also the jack can be separated and '34 or 35 locks the external threads of the jackits parts packed in small space. There are no screw in the internal threads of the block l9 at 10 small or loose parts liable to become lost and the the top and bottom of said block. 10 whole device can be cast or made at small cost. The device thus provides a very quick adjust- One form of the invention is illustrated in the ment to set the block at the proper height on the accompanying drawing-in whichFigure 1 is a screw, and thereafter the screw operates to raise side elevation of the rear end of an automobile the block and the weight while retaining the with the jack in operative position under the screw threads in engagement. The parts can be 15 bumper; Fig. 2 is a vertical section of the jack readily separated and packed in a small space. block showing the jack screw in locked position I claim: v within the block; Fig. 3 is an enlarged sectional 1. A jack comprising a rotatable screw, and a view of the block with a fragment of the jack jack block thereon, the block having an enlarged screw shown in slidable position, as when the bore with oppositely disposed thread sections at 20 threads are disengaged. opposite ends thereof, the sections of the bore Referring to the drawing, a base to has an opposite the threads being enlargedtopermit the upwardly projecting boss and a plurality of block to be tilted to engage or disengage the webs "l2 radiate from the top of the boss II to threads from the screw.

the four corners of the base It. A jack-screw l3 2. A jack as in claim '1, the block having an 5 has a tapered tip M at its lower end rounded at external weight-supporting lug on the side adja- 15 and which is removably inserted in the socket cent one of the thread sections, whereby the in the boss and adjacent h p of e weight holds the threads engaged with the screw. jack screw l3'is a bore I"! through which a turning 3. A jack comprising a rotatable screw, and a rod I8 is inserted. jack block thereon having a bore larger than the 30 A r w h sin or bl k 9 is n n l y screw, the bore having sections of halfthreads at threaded at the opposed ends 20 and 2| of the opposite sides 'and opposite ends thereof, and housing and on opposed sides only, as illustrated tapered recesses extending from about the middle in 8 2 a 3 sp v y- A S o a el of the boreto opposite ends thereof respectively, bore 32 is drilled through the housing block said recesses being at the sides of the bore oppo-. 35 I in suc mann r as to s t the thr ad d site the thread sections, whereby the block can .channel or bore 33- A pair of an u 34 be-tilted on the screw to engage or disengage the and 35' project outwardly from the jack block thread th r with.

l9 and O pp site Sides thereof adjacent the 4. A jack comprising a rotatable screw, and a en 0 an Th ar pr nt d opp slidably adjustable jack-block thereon, the block 40 sitely, so the block canv be reversed if desired. having an enlarged bore permitting it to he slid In D f the s In p a e 011 t e along the screw, the bore having mutilated thread oun l the P08111101} desired, the e d p 14 sections oppositely presented at opposite ends of e Ja k-S w 3 5 inse ted the socket thereof, said thread sectionsv being engageable 5 the block I915 Supe p sed Ov r the t p of the, withthe screw, or disen'gageable therefrom, by

jack-screw and tipped as shown in Fig. 3, the tilting th block.

block is then slipped down until one of the lugs 5, A jack as in clai 4, the block having a 3101 35 s n Position under the bject to be projecting external lug substantially opposite one. raised such as a bumper 36 of an automobile -31 of said thread sections. f

as shown in Fig. 1, the block sliding easily up SIDNEY W. JORDAN. 0

and down-while the jack-screw I3 is in the smooth 

